CN115416134A - Biological ceramic 3D printer based on stereolithography principle - Google Patents
Biological ceramic 3D printer based on stereolithography principle Download PDFInfo
- Publication number
- CN115416134A CN115416134A CN202211178592.7A CN202211178592A CN115416134A CN 115416134 A CN115416134 A CN 115416134A CN 202211178592 A CN202211178592 A CN 202211178592A CN 115416134 A CN115416134 A CN 115416134A
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- cavity
- feeding
- main body
- truss
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- 239000000919 ceramic Substances 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000003462 bioceramic Substances 0.000 claims abstract 8
- 230000005540 biological transmission Effects 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 abstract description 6
- 239000004575 stone Substances 0.000 abstract description 5
- 238000004026 adhesive bonding Methods 0.000 abstract description 3
- 239000006071 cream Substances 0.000 abstract description 2
- 238000001259 photo etching Methods 0.000 abstract description 2
- 239000003292 glue Substances 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 238000010146 3D printing Methods 0.000 description 5
- 238000003892 spreading Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- 108010066278 cabin-4 Proteins 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000110 selective laser sintering Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
Abstract
The invention relates to a three-dimensional photoetching principle-based bioceramic 3D printer, wherein a cylindrical cavity is formed on a main body bracket of the printer, and the cylindrical cavity is sequentially divided into a forming cavity, a material receiving cabin and a material supplying cavity clockwise. A forming platform capable of lifting is arranged in the forming cavity. The lower part in feed chamber is equipped with the feed platform that can rise, and last port department is equipped with the feed plate and this feed plate is close to the one side in shaping chamber and is equipped with the discharge gate. The feeding table can extrude the ceramic paste from the discharge port when moving upwards. The top surface of the main body support is provided with an annular track matched with the two ends of the truss body, and the lower end of the rotating shaft is matched with a rotary driving assembly fixed on the main body support so that the truss body can rotate. The scraper is U-shaped and is clamped on one side of the truss body. This patent has effectively solved in the past and when adopting sharp stone mode to lay the cream material that ceramic powder content >75wt%, because of having to glue phenomenons such as gluing scraper, blanking, and cause the problem of damage to the spare part body easily.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a biological ceramic 3D printer based on a stereolithography principle.
Background
The ceramic 3D printing technology has wide application prospect in the fields of industry, medicine, aerospace and the like, and shows good development trend. At present, most of domestic and foreign ceramic 3D printing equipment is mainly industrial grade, the selling price is often millions, and common scientific research units are difficult to undertake. Therefore, the desktop-level ceramic 3D printing equipment has a wide development prospect.
Among the ceramic 3D printing technologies, stereolithography (SLA), selective Laser Sintering (SLS), and Fused Deposition (FDM) are widely used. But the photocuring desktop level pottery 3D printer of current publication is mostly the linear type stone mode, and when ceramic powder content >75 wt%'s cream material in the face of using, the problem of gluing the scraper appears in the stone in-process easily, at the in-process blanking of back a knife, and then can destroy the ceramic part body, influences the printing efficiency of part.
Disclosure of Invention
The invention provides a biological ceramic 3D printer based on a stereolithography principle, aiming at the problem that when paste with the ceramic powder content of more than 75wt% is used, a part blank is damaged due to the fact that a scraper is easily adhered in the material spreading process and a blank is easily discharged in the cutter returning process, the designed annular platform is combined with a rotary material spreading mode, and the problem that when the paste with the ceramic powder content of more than 75wt% is paved in a linear material spreading mode in the prior art, the part blank is easily damaged due to the phenomena of the scraper adhesion, the blank and the like is effectively solved.
The technical scheme adopted by the invention for solving the technical problems is as follows: a three-dimensional photoetching principle-based biological ceramic 3D printer comprises a main body support, a gantry support, an ultraviolet laser device, a truss assembly and a scraper, wherein the truss assembly comprises a truss body, a rotating shaft with one end matched with the middle of the truss body, and a rotary driving assembly.
The upper part of the main body bracket is formed with a structure which is a cylindrical cavity.
The gantry support is fixed on the upper part of the main body support, and the cross beam of the gantry support is relatively arranged above the cylindrical cavity. The ultraviolet laser device is fixed on the beam of the gantry support.
The cylindrical cavity of the support main body is sequentially divided into a forming cavity, a material receiving cabin and a material supplying cavity in the clockwise direction.
And a forming table is arranged in the forming cavity and connected with the first sliding frame. The first sliding frame is matched with a linear driving mechanism arranged on the main body support and can drive the forming table to move up and down.
The lower part of the feeding cavity is provided with a feeding table, and the upper port of the feeding chamber is provided with a feeding plate. One side of the feeding plate, which is close to the forming cavity, is provided with a discharge hole in a long strip shape. The feeding table is connected with a second sliding frame, the second sliding frame is matched with a linear driving mechanism arranged on the main body support, the feeding table can be driven to move up and down, and ceramic paste in the feeding cavity can be extruded out from a discharging hole of the feeding plate.
The top surface of the main body support is provided with an annular track matched with two ends of the truss body, the other end of the rotating shaft vertically extends downwards and is matched with the rotary driving assembly fixed on the main body support, and the rotary driving assembly can drive the truss body to rotate along the track.
The scraper is U-shaped and clamped on one side of the truss body, and the cutting edge at the lower end of the scraper can pass through the upper part of the discharge hole and the upper port of the material receiving cabin in the rotating process of the truss body.
And a laser head of the ultraviolet laser device corresponds to the upper part of the forming table.
Further, be equipped with a pair of support slide on the track, this pair of support slide with the both ends of truss body correspond respectively to match and be in be equipped with on the support slide and adjust the knob of truss body horizontality.
Further, the cylindrical cavity on the support main body is a cylindrical cavity, and the forming table is semicircular, namely the forming cavity is a semicircular cavity. The forming cavity, the receiving cabin and the feeding cavity are concentrically distributed in the cylindrical cavity. The material receiving cabin and the material supplying cavity can be fan-shaped cavities with central angles of 90 degrees.
Further, the linear driving mechanism matched with the first sliding frame is a first lead screw transmission assembly, and a motor in the first lead screw transmission assembly is a servo motor. The linear feeding precision of the first screw rod transmission assembly is not more than 25 micrometers (namely 25 mu m).
Further, a linear driving mechanism matched with the sliding frame II is a lead screw transmission assembly II, and a motor in the lead screw transmission assembly II is a servo motor. The linear feeding precision of the second screw rod transmission assembly is not more than 25 micrometers (namely 25 micrometers).
Furthermore, a convex column is formed on the lower end face of the forming table, the upper end of the first sliding frame is connected with the convex column through a fastening bolt, and a connection relation which is convenient to detach and mount is established between the forming table and the first sliding frame.
Furthermore, a convex column is formed on the lower end face of the feeding table, the upper end of the second sliding frame is connected with the convex column through a fastening bolt, and a connection relation which is convenient to detach and mount is established between the forming table and the second sliding frame.
Further, the ultraviolet laser device is a galvanometer scanning device.
The invention has the beneficial effects that: the scheme that this patent was related combines together annular platform and rotatory stone, has effectively solved in the past and has adopted sharp stone mode to lay when ceramic powder content >75wt% paste material, because of having phenomenons such as gluing scraper, blanking, and cause the problem of damage to the spare part body easily.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present patent (the upper half of the housing is omitted).
Fig. 2 is a schematic structural diagram of an embodiment of the present patent (the whole housing is omitted).
Fig. 3 is a schematic structural view of a portion associated with a forming table in this patent.
Fig. 4 is a schematic top view of an embodiment of the present disclosure.
FIG. 5 is a schematic structural diagram (top axial view) according to an embodiment of the present disclosure.
Fig. 6 is a schematic structural diagram of an embodiment of the present patent.
Fig. 7 is a schematic view of a main viewing direction structure according to an embodiment of the present disclosure.
In the figure: the automatic feeding device comprises a lower support 1, an upper support 2, a track 21, a gantry support 3, a material receiving cabin 4, a forming table 5, a first 51 sliding frame, a first 52 screw transmission assembly, a first 6 feeding plate, a material outlet 61, a second 62 sliding frame, a second 63 screw transmission assembly, a second 7 self-external laser device, a 8 truss body, a knob 81, a 82 supporting sliding seat, a 83 rotating shaft, a 84 rotating driving assembly, a 9 scraper and a 10 shell.
Detailed Description
The structures, proportions, and dimensions shown in the drawings and described in the specification are for understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined in the claims, and are not essential to the skilled in the art. Meanwhile, the terms such as "upper", "lower", "front", "rear" and "middle" used in the present specification are used for clarity of description only, and are not used to limit the scope of the present invention, and the relative relationship changes or adjustments may be considered as the scope of the present invention without substantial changes in the technical content.
As shown in fig. 1 to 7, the 3D printer based on the stereolithography principle comprises a lower support 1, an upper support 2, a gantry support 3, an ultraviolet laser device 7, a truss assembly and a scraper 9, wherein the truss assembly comprises a truss body 8, a rotating shaft 83 with one end matched with the middle of the truss body 8, and a rotation driving assembly 84.
The upper bracket 2 is mounted on the upper end of the lower bracket 1 to form a main body bracket, and a cylindrical cavity is formed at the upper part of the upper bracket 2.
The gantry support 3 is fixed on the upper part of the upper support 2, and the beam of the gantry support 3 is relatively arranged above the cylindrical cavity. The ultraviolet laser device 7 is fixed in the middle of the beam of the gantry support 3.
The cylindrical cavity of the upper bracket 2 is sequentially divided into a forming cavity, a material receiving cabin 4 and a material supplying cavity in the clockwise direction.
And a forming table 5 is arranged in the forming cavity, and the forming table 5 is connected with a first sliding frame 51. The first carriage 51 is matched with a first lead screw transmission assembly 52 arranged on the lower bracket 1. A servo motor in the lead screw transmission assembly I52 can drive the sliding frame I51 to drive the forming table 5 to do linear lifting movement.
The lower part of the feeding cavity is provided with a feeding table, and the upper port is provided with a feeding plate 6. And a strip-shaped discharge hole 61 is formed in one side, close to the forming cavity, of the feeding plate 6. The feeding table is connected with a second sliding frame 62, and the second sliding frame 62 is matched with a second lead screw transmission assembly 63 arranged on the lower support 1. The second screw rod transmission assembly 63 can drive the feeding table to do linear lifting movement, and the ceramic paste in the feeding cavity can be extruded out from the discharge hole 61 on the feeding plate 6.
The top surface of the upper bracket 2 is provided with an annular rail 21 matched with two ends of the truss body 8, and the other end of the rotating shaft 83 vertically extends downwards and is matched with the rotary driving assembly 84 fixed on the upper part of the lower bracket 1, so that the rotary driving assembly 84 can drive the truss body 8 to rotate along the rail 21.
The scraper 9 is in an inverted U shape and is clamped on one side of the truss body 8. During rotation with the truss body 8, the cutting edge at the lower end of the scraper 9 can pass through the upper part of the discharge port 61 and the upper port of the material collecting chamber 4.
The laser head of the ultraviolet laser device 7 is correspondingly arranged above the forming table 5.
A pair of supporting sliding seats 82 is arranged on the track 21, the supporting sliding seats 82 are respectively matched with two ends of the truss body 8 correspondingly, and a knob 81 capable of adjusting the levelness of the truss body 8 is arranged on the supporting sliding seats 82.
As shown in fig. 1 to 7, the cylindrical cavity of the upper bracket 2 is a cylindrical cavity, and the forming table is semicircular, that is, the forming cavity is a semicircular cavity. The forming cavity, the material receiving cabin and the material supplying cavity are concentrically distributed in the cylindrical cavity. The material receiving cabin and the material supplying cavity are fan-shaped cavities with central angles of 90 degrees.
The motor in the first screw rod transmission assembly 52 is a servo motor. The linear feeding precision of the first screw rod transmission assembly is not more than 25 micrometers (namely 25 mu m).
And a motor in the second screw rod transmission assembly 63 is a servo motor. The linear feeding precision of the second screw rod transmission assembly is not more than 25 micrometers (namely 25 micrometers).
In the illustrated embodiment, the blade 9 is an inverted U-shaped blade. After assembly, the front and rear edges of the doctor blade have a height difference of 50 μm from the upper end plane of the forming table 5. The radius of the forming table 5 is 20cm. The inside wall of scraper 9 with through linear type track structure phase-match between the truss body 8 be equipped with spiral (fine setting) knob on the roof of scraper 9, this spiral (fine setting) knob can adjust the high position of scraper lower extreme cutting edge.
In order to facilitate disassembly and cleaning operation, a convex column is formed at the lower end face of the forming table 5, the upper end of the first sliding frame 51 is connected with the convex column through a fastening bolt, and a connection relationship which facilitates disassembly and assembly is established between the forming table 5 and the first sliding frame 51. A convex column is formed on the lower end face of the feeding table, the upper end of the second sliding frame 62 is connected with the convex column through a fastening bolt, and a connection relation which is convenient to disassemble and assemble is established between the forming table and the second sliding frame.
The ultraviolet laser device 7 is a galvanometer scanning device.
And a shell 10 is arranged outside the lower bracket and the upper bracket.
The working steps of the scheme related to the patent are roughly as follows:
(1) Firstly, detecting and determining whether the forming table 5 is in a horizontal position by using a universal level gauge, and if the table top at the upper end of the forming table 5 is not in the horizontal plane, adjusting the whole forming table by using a gasket to enable the forming table to be horizontal;
(2) The driving truss body 8 drives the scraper 9 to synchronously rotate, so that the scraper 9 in an initial state moves to the upper part of the forming table 5; then adjusting (fine adjustment) knobs 81 at the two ends of the truss body 8 (the knobs rotate for one circle and are adjusted by two micrometers), and adjusting the scraper 9 and (the upper end plane of) the forming table 5 to be in a relatively horizontal position;
(3) Ceramic paste is injected into the feeding cavity, and the rotation speed of a servo motor in the lead screw transmission assembly II 63 is set so that the feeding table can move linearly upwards at a preset speed to feed; with the continuous upward movement of the feeding table, the ceramic paste is finally extruded out in a strip shape from the discharge port 61 on the feeding plate 6;
(4) Driving the truss body 8 to drive the scraper 9 arranged on the truss body to rotate to the rear of the discharge hole 61, and preparing for paving; enabling a stepping motor in the rotation driving assembly to work at a preset running speed to drive the rotating shaft 83 to rotate so as to drive the truss body 8 to synchronously rotate, and enabling the scraper 9 arranged on the truss body 8 to spread on the forming table 5 at a preset rotating speed;
(5) After the material spreading is finished (the material spreading thickness can be set to be 25 micrometers), the scraper 9 is driven to continue to rotate to the position above the material receiving cabin 4 to stop, so that redundant paste falls on the material receiving cabin to perform blanking recovery, and meanwhile, the ultraviolet laser device 7 starts to work to perform curing printing;
(6) After the previous layer is printed, the lead screw transmission assembly drives the forming table to move by 25 microns, and then the working process after the circulation is started from the step (3);
thus, through the laminated material spreading-printing operation, the printing of each layer of blank is completed in sequence, and finally the part is obtained.
In conclusion, the scheme of the invention effectively solves the problem that the blank of the part is easily damaged due to the phenomena of sticking and scraping, blanking and the like when the paste with the ceramic powder content of more than 75wt% is paved by adopting a linear paving mode in the prior art by combining the annular platform with the rotary paving. Therefore, the invention effectively overcomes some practical problems in the prior art, thereby having high utilization value and use significance.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Many modifications may be made to the present invention without departing from the spirit or scope of the general inventive concept, and it will be apparent to those skilled in the art that changes and modifications may be made to the above-described embodiments without departing from the spirit or scope of the invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (8)
1. A biological ceramic 3D printer based on stereolithography principle, includes main part support, ultraviolet laser device and scraper, characterized by: the truss assembly comprises a truss body, a rotating shaft with one end matched with the middle part of the truss body, and a rotary driving assembly; a cylindrical cavity structure is formed at the upper part of the main body bracket; the cylindrical cavity of the bracket main body is sequentially divided into a forming cavity, a material receiving cabin and a material supplying cavity in the clockwise direction; the gantry support is fixed on the upper part of the main body support, and a cross beam of the gantry support is relatively arranged above the cylindrical cavity; the ultraviolet laser device is fixed on a cross beam of the gantry support;
a forming table is arranged in the forming cavity and connected with the first sliding frame; the first sliding frame is matched with a linear driving mechanism arranged on the main body bracket and can drive the forming table to move up and down;
the lower part of the feeding cavity is provided with a feeding table, and the upper port of the feeding chamber is provided with a feeding plate; a strip-shaped discharge hole is formed in one side, close to the forming cavity, of the feeding plate; the feeding table is connected with a second sliding frame, the second sliding frame is matched with a linear driving mechanism arranged on the main body support, and can drive the feeding table to move up and down, so that the ceramic paste in the feeding cavity can be extruded out of a discharging hole of the feeding plate;
the top surface of the main body support is provided with an annular track matched with two ends of the truss body, and the other end of the rotating shaft vertically extends downwards and is matched with the rotary driving assembly fixed on the main body support, so that the rotary driving assembly can drive the truss body to rotate;
the scraper is U-shaped and is clamped on one side of the truss body, and the cutting edge at the lower end of the scraper can pass through the upper part of the discharge port and the upper port of the material receiving cabin in the rotating process along with the truss body;
and a laser head of the ultraviolet laser device corresponds to the upper part of the forming table.
2. The bioceramic 3D printer based on the stereolithography principle of claim 1, wherein: the truss structure is characterized in that a pair of supporting sliding seats are arranged on the track, the supporting sliding seats and the two ends of the truss body are respectively matched in a corresponding mode, and a knob capable of adjusting the horizontality of the truss body is arranged on each supporting sliding seat.
3. The bioceramic 3D printer based on the stereolithography principle of claim 1, wherein: the cylindrical cavity on the bracket main body is a cylindrical cavity, and the forming table is semicircular; the forming cavity, the receiving cabin and the feeding cavity are concentrically distributed in the cylindrical cavity.
4. A bioceramic 3D printer based on the stereolithography principle, according to any one of claims 1 to 3, wherein: the linear driving mechanism matched with the first sliding frame is a first lead screw transmission assembly, and a motor in the first lead screw transmission assembly is a servo motor; the linear feeding precision of the first lead screw conveying assembly is not more than 25 microns.
5. A bioceramic 3D printer based on the stereolithography principle, according to any one of claims 1 to 3, wherein: the linear driving mechanism matched with the sliding frame II is a lead screw transmission assembly II, and a motor in the lead screw transmission assembly II is a servo motor; and the linear feeding precision of the second lead screw conveying assembly is not more than 25 microns.
6. A bioceramic 3D printer based on the stereolithography principle, according to any one of claims 1 to 3, wherein: and a convex column is formed on the lower end surface of the forming table, and the upper end of the first sliding frame is connected with the convex column through a fastening bolt.
7. A bioceramic 3D printer based on the stereolithography principle, according to any one of claims 1 to 3, wherein: and a convex column is formed on the lower end surface of the feeding table, and the upper end of the sliding frame II is connected with the convex column through a fastening bolt.
8. A bioceramic 3D printer based on the stereolithography principle, according to any one of claims 1 to 3, wherein: the ultraviolet laser device is a galvanometer scanning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211178592.7A CN115416134B (en) | 2022-09-27 | 2022-09-27 | Biological ceramic 3D printer based on stereolithography principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211178592.7A CN115416134B (en) | 2022-09-27 | 2022-09-27 | Biological ceramic 3D printer based on stereolithography principle |
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| Publication Number | Publication Date |
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| CN115416134A true CN115416134A (en) | 2022-12-02 |
| CN115416134B CN115416134B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN110560689A (en) * | 2019-09-29 | 2019-12-13 | 西安增材制造国家研究院有限公司 | Continuous circulation powder laying structure and additive manufacturing forming equipment |
| WO2021017129A1 (en) * | 2019-07-31 | 2021-02-04 | 西安增材制造国家研究院有限公司 | Additive fabrication device and forming method |
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| CN113290663A (en) * | 2021-06-04 | 2021-08-24 | 南京聿成科技研发有限公司 | Rotational molding's ceramic printer |
| US11155028B1 (en) * | 2020-04-24 | 2021-10-26 | Sprintray Inc. | Apparatus and method for three-dimensional printing |
| CN216609446U (en) * | 2021-12-20 | 2022-05-27 | 泉州坤泰机械精工制造有限公司 | Automatic ceramic trimming equipment |
-
2022
- 2022-09-27 CN CN202211178592.7A patent/CN115416134B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104016686A (en) * | 2014-03-07 | 2014-09-03 | 南京理工大学 | Selective laser fusion molding equipment for ceramic material |
| CN107810094A (en) * | 2015-07-16 | 2018-03-16 | 韩国机械研究院 | 3D ceramic printers and the method using the 3D ceramic printers |
| CN206465462U (en) * | 2017-02-22 | 2017-09-05 | 无锡金谷三维科技有限公司 | A kind of polar coordinates type 3D printer |
| WO2021017129A1 (en) * | 2019-07-31 | 2021-02-04 | 西安增材制造国家研究院有限公司 | Additive fabrication device and forming method |
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| Publication number | Publication date |
|---|---|
| CN115416134B (en) | 2024-05-28 |
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